<!--
 Copyright 2023 The CubeFS Authors.

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

     http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 implied. See the License for the specific language governing
 permissions and limitations under the License.
-->

<template>
  <div class="cloud-common-skeleton">
    <div class="cloud-common-skeleton_overlay"></div>
    <div class="cloud-common-skeleton_cogs">
      <div class="cloud-common-skeleton_cogs__top">
        <div class="top_part"></div>
        <div class="top_part"></div>
        <div class="top_part"></div>
        <div class="top_hole"></div>
      </div>
      <div class="cloud-common-skeleton_cogs__left">
        <div class="left_part"></div>
        <div class="left_part"></div>
        <div class="left_part"></div>
        <div class="left_hole"></div>
      </div>
      <div class="cloud-common-skeleton_cogs__bottom">
        <div class="bottom_part"></div>
        <div class="bottom_part"></div>
        <div class="bottom_part"></div>
        <div class="bottom_hole">
          <!-- lol -->
        </div>
      </div>
      <p class="loading">loading...</p>
    </div>
  </div>
</template>
<style lang="scss" scoped>
/* Variables */

$pink: #2fc29b;
$blue: #2db7f5;
$yellow: #ff9900;
$font: 'Montserrat', sans-serif;
$heading: rgb(87, 110, 129);
$sub: #2fc29b;

/* Mixins */

@mixin center {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  margin: auto;
}

@mixin hole {
  border-radius: 100%;
  background: white;
  position: absolute;
}

p.loading {
  margin: 0 auto;
  text-align: center;
  color: #333;
  font-size: 32px;
}
.cloud-common-skeleton {
  height: 100%;
  position: relative;
  margin: auto;
  width: 100%;
  overflow: hidden;
  &_overlay {
    width: 150px;
    height: 150px;
    background: transparent;
    box-shadow: 0px 0px 0px 1000px rgba(255, 255, 255, 0.67),
      0px 0px 19px 0px rgba(0, 0, 0, 0.16) inset;
    border-radius: 100%;
    z-index: -1;
    @include center;
  }
  &_cogs {
    z-index: -2;
    width: 100px;
    height: 100px;
    top: -120px !important;
    @include center;
    &__top {
      position: relative;
      width: 100px;
      height: 100px;
      transform-origin: 50px 50px;
      animation: rotate 10s infinite linear;
      @for $i from 1 through 3 {
        div:nth-of-type(#{$i}) {
          transform: rotate($i * 30deg);
        }
      }
      div.top_part {
        width: 100px;
        border-radius: 10px;
        position: absolute;
        height: 100px;
        background: $pink;
      }
      div.top_hole {
        width: 50px;
        height: 50px;
        @include hole;
        @include center;
      }
    }
    &__left {
      position: relative;
      width: 80px;
      transform: rotate(16deg);
      top: 28px;
      transform-origin: 40px 40px;
      animation: rotate_left 10s 0.1s infinite reverse linear;
      left: -24px;
      height: 80px;
      @for $i from 1 through 3 {
        div:nth-of-type(#{$i}) {
          transform: rotate($i * 30deg);
        }
      }
      div.left_part {
        width: 80px;
        border-radius: 6px;
        position: absolute;
        height: 80px;
        background: $blue;
      }
      div.left_hole {
        width: 40px;
        height: 40px;
        @include hole;
        @include center;
      }
    }
    &__bottom {
      position: relative;
      width: 60px;
      top: -65px;
      transform-origin: 30px 30px;
      animation: rotate_left 10.2s 0.4s infinite linear;
      transform: rotate(4deg);
      left: 79px;
      height: 60px;
      @for $i from 1 through 3 {
        div:nth-of-type(#{$i}) {
          transform: rotate($i * 30deg);
        }
      }
      div.bottom_part {
        width: 60px;
        border-radius: 5px;
        position: absolute;
        height: 60px;
        background: $yellow;
      }
      div.bottom_hole {
        width: 30px;
        height: 30px;
        @include hole;
        @include center;
      }
    }
  }
}

/* Animations */

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes rotate_left {
  from {
    transform: rotate(16deg);
  }
  to {
    transform: rotate(376deg);
  }
}

@keyframes rotate_right {
  from {
    transform: rotate(4deg);
  }
  to {
    transform: rotate(364deg);
  }
}
</style>
